static const char* get_token_to_eol(const char* buf, const char* buf_end, const char** token, size_t* token_len, int* ret) { const char* token_start = buf; #ifdef __SSE4_2__ static const char ranges1[] = "\0\010" /* allow HT */ "\012\037" /* allow SP and up to but not including DEL */ "\177\177" /* allow chars w. MSB set */ ; int found; buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found); if (found) goto FOUND_CTL; #else /* find non-printable char within the next 8 bytes, this is the hottest code; manually inlined */ while (likely(buf_end - buf >= 8)) { #define DOIT() if (unlikely(! IS_PRINTABLE_ASCII(*buf))) goto NonPrintable; ++buf DOIT(); DOIT(); DOIT(); DOIT(); DOIT(); DOIT(); DOIT(); DOIT(); #undef DOIT continue; NonPrintable: if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) { goto FOUND_CTL; } ++buf; } #endif for (; ; ++buf) { CHECK_EOF(); if (unlikely(! IS_PRINTABLE_ASCII(*buf))) { if ((likely((unsigned char)*buf < '\040') && likely(*buf != '\011')) || unlikely(*buf == '\177')) { goto FOUND_CTL; } } } FOUND_CTL: if (likely(*buf == '\015')) { ++buf; EXPECT_CHAR('\012'); *token_len = buf - 2 - token_start; } else if (*buf == '\012') { *token_len = buf - token_start; ++buf; } else { *ret = -1; return NULL; } *token = token_start; return buf; }
static const char *parse_headers(const char *buf, const char *buf_end, struct phr_header *headers, size_t *num_headers, size_t max_headers, int *ret) { for (;; ++*num_headers) { CHECK_EOF(); if (*buf == '\015') { ++buf; EXPECT_CHAR('\012'); break; } else if (*buf == '\012') { ++buf; break; } if (*num_headers == max_headers) { *ret = -1; return NULL; } if (!(*num_headers != 0 && (*buf == ' ' || *buf == '\t'))) { if (!token_char_map[(unsigned char)*buf]) { *ret = -1; return NULL; } /* parsing name, but do not discard SP before colon, see * http://www.mozilla.org/security/announce/2006/mfsa2006-33.html */ headers[*num_headers].name = buf; static const char ALIGNED(16) ranges1[] = "::\x00\037"; int found; buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found); if (!found) { CHECK_EOF(); } while (1) { if (*buf == ':') { break; } else if (*buf < ' ') { *ret = -1; return NULL; } ++buf; CHECK_EOF(); } headers[*num_headers].name_len = buf - headers[*num_headers].name; ++buf; for (;; ++buf) { CHECK_EOF(); if (!(*buf == ' ' || *buf == '\t')) { break; } } } else { headers[*num_headers].name = NULL; headers[*num_headers].name_len = 0; } if ((buf = get_token_to_eol(buf, buf_end, &headers[*num_headers].value, &headers[*num_headers].value_len, ret)) == NULL) { return NULL; } }
static const char *parse_headers(const char *buf, const char *buf_end, struct phr_header *headers, size_t *num_headers, size_t max_headers, int *ret) { for (;; ++*num_headers) { CHECK_EOF(); if (*buf == '\015') { ++buf; EXPECT_CHAR('\012'); break; } else if (*buf == '\012') { ++buf; break; } if (*num_headers == max_headers) { *ret = -1; return NULL; } if (!(*num_headers != 0 && (*buf == ' ' || *buf == '\t'))) { /* parsing name, but do not discard SP before colon, see * http://www.mozilla.org/security/announce/2006/mfsa2006-33.html */ headers[*num_headers].name = buf; static const char ALIGNED(16) ranges1[] = "\x00 " /* control chars and up to SP */ "\"\"" /* 0x22 */ "()" /* 0x28,0x29 */ ",," /* 0x2c */ "//" /* 0x2f */ ":@" /* 0x3a-0x40 */ "[]" /* 0x5b-0x5d */ "{\377"; /* 0x7b-0xff */ int found; buf = findchar_fast(buf, buf_end, ranges1, sizeof(ranges1) - 1, &found); if (!found) { CHECK_EOF(); } while (1) { if (*buf == ':') { break; } else if (!token_char_map[(unsigned char)*buf]) { *ret = -1; return NULL; } ++buf; CHECK_EOF(); } if ((headers[*num_headers].name_len = buf - headers[*num_headers].name) == 0) { *ret = -1; return NULL; } ++buf; for (;; ++buf) { CHECK_EOF(); if (!(*buf == ' ' || *buf == '\t')) { break; } } } else {