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Draft of the Set-Cookie header parser

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cozis
2025-11-22 22:31:29 +01:00
parent 4ca5b67d8e
commit fe1c0d5b86
2 changed files with 288 additions and 1 deletions
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chttp.h
+1 -1
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@@ -526,8 +526,8 @@ int socket_manager_wakeup(SocketManager *sm);
typedef struct {
void **ptrs;
struct pollfd *polled;
int num_polled;
int max_polled;
int num_polled;
} EventRegister;
// Resets the event register with the list of descriptors
src/parse.c
+287
View File
@@ -1322,3 +1322,290 @@ bool http_match_host(HTTP_Request *req, HTTP_String domain, int port)
HTTP_String host = req->headers[idx].value;
return http_streq(host, domain);
}
typedef enum {
HTTP_WEEKDAY_MON,
HTTP_WEEKDAY_TUE,
HTTP_WEEKDAY_WED,
HTTP_WEEKDAY_THU,
HTTP_WEEKDAY_FRI,
HTTP_WEEKDAY_SAT,
HTTP_WEEKDAY_SUN,
} HTTP_WeekDay;
typedef enum {
HTTP_MONTH_JAN,
HTTP_MONTH_FEB,
HTTP_MONTH_MAR,
HTTP_MONTH_APR,
HTTP_MONTH_MAY,
HTTP_MONTH_JUN,
HTTP_MONTH_JUL,
HTTP_MONTH_AUG,
HTTP_MONTH_SEP,
HTTP_MONTH_OCT,
HTTP_MONTH_NOV,
HTTP_MONTH_DEC,
} HTTP_Month;
typedef struct {
HTTP_WeekDay week_day;
int day;
HTTP_Month month;
int year;
int hour;
int minute;
int second;
} HTTP_Date;
// <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT
static int parse_date(Scanner *s, HTTP_Date *out)
{
struct { HTTP_String str; HTTP_WeekDay val; } week_day_table[] = {
{ HTTP_STR("Mon, "), HTTP_WEEKDAY_MON },
{ HTTP_STR("Tue, "), HTTP_WEEKDAY_TUE },
{ HTTP_STR("Wed, "), HTTP_WEEKDAY_WED },
{ HTTP_STR("Thu, "), HTTP_WEEKDAY_THU },
{ HTTP_STR("Fri, "), HTTP_WEEKDAY_FRI },
{ HTTP_STR("Sat, "), HTTP_WEEKDAY_SAT },
{ HTTP_STR("Sun, "), HTTP_WEEKDAY_SUN },
};
bool found = false;
for (int i = 0; i < HTTP_COUNT(week_day_table); i++)
if (consume_str(s, week_day_table[i].str)) {
out->week_day = week_day_table[i].val;
found = true;
break;
}
if (!found)
return -1;
if (1 >= s->len - s->cur
|| !is_digit(s->src[s->cur+0])
|| !is_digit(s->src[s->cur+1]))
return -1;
out->day
= (s->src[s->cur+0] - '0') * 10
+ (s->src[s->cur+1] - '0') * 1;
s->cur += 2;
struct { HTTP_String str; HTTP_Month val; } month_table[] = {
{ HTTP_STR(" Jan "), HTTP_MONTH_JAN },
{ HTTP_STR(" Feb "), HTTP_MONTH_FEB },
{ HTTP_STR(" Mar "), HTTP_MONTH_MAR },
{ HTTP_STR(" Apr "), HTTP_MONTH_APR },
{ HTTP_STR(" May "), HTTP_MONTH_MAY },
{ HTTP_STR(" Jun "), HTTP_MONTH_JUN },
{ HTTP_STR(" Jul "), HTTP_MONTH_JUL },
{ HTTP_STR(" Aug "), HTTP_MONTH_AUG },
{ HTTP_STR(" Sep "), HTTP_MONTH_SEP },
{ HTTP_STR(" Oct "), HTTP_MONTH_OCT },
{ HTTP_STR(" Nov "), HTTP_MONTH_NOV },
{ HTTP_STR(" Dec "), HTTP_MONTH_DEC },
};
found = false;
for (int i = 0; i < HTTP_COUNT(month_table); i++)
if (consume_str(s, month_table[i].str)) {
out->month = month_table[i].val;
found = true;
break;
}
if (!found)
return -1;
if (3 >= s->len - s->cur
|| !is_digit(s->src[s->cur+0])
|| !is_digit(s->src[s->cur+1])
|| !is_digit(s->src[s->cur+2])
|| !is_digit(s->src[s->cur+3]))
return -1;
out->year
= (s->src[s->cur+0] - '0') * 1000
+ (s->src[s->cur+1] - '0') * 100
+ (s->src[s->cur+1] - '0') * 10
+ (s->src[s->cur+1] - '0') * 1;
s->cur += 4;
if (s->cur == s->len || s->src[s->cur] != ' ')
return -1;
s->cur++;
if (7 >= s->len - s->cur
|| !is_digit(s->src[s->cur+0])
|| !is_digit(s->src[s->cur+1])
|| s->src[s->cur+2] != ':'
|| !is_digit(s->src[s->cur+3])
|| !is_digit(s->src[s->cur+4])
|| s->src[s->cur+5] != ':'
|| !is_digit(s->src[s->cur+6])
|| !is_digit(s->src[s->cur+7])
|| s->src[s->cur+8] != ' '
|| s->src[s->cur+9] != 'G'
|| s->src[s->cur+10] != 'M'
|| s->src[s->cur+11] != 'T')
return -1;
out->hour
= (s->src[s->cur+0] - '0') * 10
+ (s->src[s->cur+1] - '0') * 1;
out->minute
= (s->src[s->cur+3] - '0') * 10
+ (s->src[s->cur+4] - '0') * 1;
out->second
= (s->src[s->cur+6] - '0') * 10
+ (s->src[s->cur+7] - '0') * 1;
s->cur += 12;
return 0;
}
// cookie-octet = %x21 / %x23-2B / %x2D-3A / %x3C-5B / %x5D-7E
// ; US-ASCII characters excluding CTLs,
// ; whitespace, DQUOTE, comma, semicolon,
// ; and backslash
static bool is_cookie_octet(char c)
{
// TODO
}
typedef struct {
HTTP_String name;
HTTP_String value;
bool secure;
} HTTP_SetCookie;
void http_parse_set_cookie(HTTP_String str, HTTP_SetCookie *out)
{
char *src = str.ptr;
int len = str.len;
int cur = 0;
// cookie-name = token
if (cur == len || !is_tchar(src[cur]))
return -1;
int off = cur;
do
cur++;
while (cur < len && is_tchar(src[cur]));
out->name = (HTTP_String) { src + off, cur - off };
// cookie-pair = cookie-name "=" cookie-value
if (cur == len || src[cur] != '=')
return -1;
cur++;
// cookie-value = *cookie-octet / ( DQUOTE *cookie-octet DQUOTE )
if (cur < len && src[cur] == '"') {
cur++; // Consume opening double quote
int off = cur;
while (cur < len && is_cookie_octet(src[cur]))
cur++;
if (cur == len || src[cur] != '"')
return -1; // Missing closing double quote
out->value = (HTTP_String) { src + off, cur - off };
cur++; // Consume closing double quote
} else {
int off = cur;
while (cur < len && is_cookie_octet(src[cur]))
cur++;
out->value = (HTTP_String) { src + off, cur - off };
}
// *( ";" SP cookie-av )
//
// cookie-av = expires-av / max-age-av / domain-av /
// path-av / secure-av / httponly-av /
// extension-av
while (cur < len && src[cur] == ';') {
cur++; // Consume semicolon
if (cur == len || src[cur] != ' ')
return -1; // Missing space after semicolon
cur++;
// expires-av = "Expires=" sane-cookie-date
if (7 < len - cur
&& src[cur+0] == 'E'
&& src[cur+1] == 'x'
&& src[cur+2] == 'p'
&& src[cur+3] == 'i'
&& src[cur+4] == 'r'
&& src[cur+5] == 'e'
&& src[cur+6] == 's'
&& src[cur+7] == '=') {
cur += 8;
// TODO
// max-age-av = "Max-Age=" non-zero-digit *DIGIT
} else if (7 < len - cur
&& src[cur+0] == 'M'
&& src[cur+1] == 'a'
&& src[cur+2] == 'x'
&& src[cur+3] == '-'
&& src[cur+4] == 'A'
&& src[cur+5] == 'g'
&& src[cur+6] == 'e'
&& src[cur+7] == '=') {
cur += 8;
// domain-av = "Domain=" domain-value
} else if (6 < len - cur
&& src[cur+0] == 'D'
&& src[cur+1] == 'o'
&& src[cur+2] == 'm'
&& src[cur+3] == 'a'
&& src[cur+4] == 'i'
&& src[cur+5] == 'n'
&& src[cur+6] == '=') {
cur += 7;
// domain-value = <subdomain>
// ; defined in RFC 1034, Section 3.5
// TODO
// path-av = "Path=" path-value
} else if (4 < len - cur
&& src[cur+0] == 'P'
&& src[cur+1] == 'a'
&& src[cur+2] == 't'
&& src[cur+3] == 'h'
&& src[cur+4] == '=') {
cur += 5;
// path-value = <any CHAR except CTLs or ";">
//
// TODO
// secure-av = "Secure"
} else if (5 < len - cur
&& src[cur+0] == 'S'
&& src[cur+1] == 'e'
&& src[cur+2] == 'c'
&& src[cur+3] == 'u'
&& src[cur+4] == 'r'
&& src[cur+5] == 'e') {
cur += 6;
// TODO
// httponly-av = "HttpOnly"
} else if (
&& src[cur+0] == 'H'
&& src[cur+1] == 't'
&& src[cur+2] == 't'
&& src[cur+3] == 'p'
&& src[cur+4] == 'O'
&& src[cur+5] == 'n'
&& src[cur+6] == 'l'
&& src[cur+7] == 'y') {
cur += 8;
// TODO
} else {
return -1; // Invalid attribute
}
}
}