mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-28 07:18:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Add chunked transfer decoding to redbean

Browse source
This commit is contained in:
Justine Tunney 2021-07-05 01:03:45 -07:00
parent 8d5f60a9cd
commit 58fb2fb3d3
13 changed files with 693 additions and 292 deletions
Download patch file Download diff file Expand all files Collapse all files

79
net/http/parsehttpmessage.c
View file

@ -31,21 +31,6 @@
#define LIMIT (SHRT_MAX - 2)
enum HttpMessageState {
START,
METHOD,
URI,
VERSION,
STATUS,
MESSAGE,
HKEY,
HSEP,
HVAL,
CR1,
LF1,
LF2,
};
/**
* Initializes HTTP message parser.
*/
@ -78,8 +63,8 @@ void DestroyHttpMessage(struct HttpMessage *r) {
*
* This parser assumes ISO-8859-1 and guarantees no C0 or C1 control
* codes are present in message fields, with the exception of tab.
* Please note that fields like URI may use UTF-8 percent encoding. This
* parser doesn't care if you choose ASA X3.4-1963 or MULTICS newlines.
* Please note that fields like kHttpStateUri may use UTF-8 percent encoding.
* This parser doesn't care if you choose ASA X3.4-1963 or MULTICS newlines.
*
* kHttpRepeatable defines which standard header fields are O(1) and
* which ones may have comma entries spilled over into xheaders. For
@ -105,20 +90,20 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
for (n = MIN(n, LIMIT); r->i < n; ++r->i) {
c = p[r->i] & 0xff;
switch (r->t) {
case START:
case kHttpStateStart:
if (c == '\r' || c == '\n') break; /* RFC7230 § 3.5 */
if (!kHttpToken[c]) return ebadmsg();
r->t = r->type == kHttpRequest ? METHOD : VERSION;
r->t = r->type == kHttpRequest ? kHttpStateMethod : kHttpStateVersion;
r->a = r->i;
break;
case METHOD:
case kHttpStateMethod:
for (;;) {
if (c == ' ') {
r->method = GetHttpMethod(p + r->a, r->i - r->a);
r->xmethod.a = r->a;
r->xmethod.b = r->i;
r->a = r->i + 1;
r->t = URI;
r->t = kHttpStateUri;
break;
} else if (!kHttpToken[c]) {
return ebadmsg();
@ -127,7 +112,7 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case URI:
case kHttpStateUri:
for (;;) {
if (c == ' ' || c == '\r' || c == '\n') {
if (r->i == r->a) return ebadmsg();
@ -135,10 +120,10 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
r->uri.b = r->i;
if (c == ' ') {
r->a = r->i + 1;
r->t = VERSION;
r->t = kHttpStateVersion;
} else {
r->version = 9;
r->t = c == '\r' ? CR1 : LF1;
r->t = c == '\r' ? kHttpStateCr : kHttpStateLf1;
}
break;
} else if (c < 0x20 || (0x7F <= c && c < 0xA0)) {
@ -148,31 +133,31 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case VERSION:
case kHttpStateVersion:
if (c == ' ' || c == '\r' || c == '\n') {
if (r->i - r->a == 8 &&
(READ64BE(p + r->a) & 0xFFFFFFFFFF00FF00) == 0x485454502F002E00 &&
isdigit(p[r->a + 5]) && isdigit(p[r->a + 7])) {
r->version = (p[r->a + 5] - '0') * 10 + (p[r->a + 7] - '0');
if (r->type == kHttpRequest) {
r->t = c == '\r' ? CR1 : LF1;
r->t = c == '\r' ? kHttpStateCr : kHttpStateLf1;
} else {
r->t = STATUS;
r->t = kHttpStateStatus;
}
} else {
return ebadmsg();
}
}
break;
case STATUS:
case kHttpStateStatus:
for (;;) {
if (c == ' ' || c == '\r' || c == '\n') {
if (r->status < 100) return ebadmsg();
if (c == ' ') {
r->a = r->i + 1;
r->t = MESSAGE;
r->t = kHttpStateMessage;
} else {
r->t = c == '\r' ? CR1 : LF1;
r->t = c == '\r' ? kHttpStateCr : kHttpStateLf1;
}
break;
} else if ('0' <= c && c <= '9') {
@ -186,12 +171,12 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case MESSAGE:
case kHttpStateMessage:
for (;;) {
if (c == '\r' || c == '\n') {
r->message.a = r->a;
r->message.b = r->i;
r->t = c == '\r' ? CR1 : LF1;
r->t = c == '\r' ? kHttpStateCr : kHttpStateLf1;
break;
} else if (c < 0x20 || (0x7F <= c && c < 0xA0)) {
return ebadmsg();
@ -200,27 +185,31 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case CR1:
case kHttpStateCr:
if (c != '\n') return ebadmsg();
r->t = LF1;
r->t = kHttpStateLf1;
break;
case LF1:
case kHttpStateLf1:
if (c == '\r') {
r->t = LF2;
r->t = kHttpStateLf2;
break;
} else if (c == '\n') {
return ++r->i;
} else if (!kHttpToken[c]) {
return ebadmsg(); /* RFC7230 § 3.2.4 */
/*
* 1. Forbid empty header name (RFC2616 §2.2)
* 2. Forbid line folding (RFC7230 §3.2.4)
*/
return ebadmsg();
}
r->k.a = r->i;
r->t = HKEY;
r->t = kHttpStateName;
break;
case HKEY:
case kHttpStateName:
for (;;) {
if (c == ':') {
r->k.b = r->i;
r->t = HSEP;
r->t = kHttpStateColon;
break;
} else if (!kHttpToken[c]) {
return ebadmsg();
@ -229,12 +218,12 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case HSEP:
case kHttpStateColon:
if (c == ' ' || c == '\t') break;
r->a = r->i;
r->t = HVAL;
r->t = kHttpStateValue;
/* fallthrough */
case HVAL:
case kHttpStateValue:
for (;;) {
if (c == '\r' || c == '\n') {
i = r->i;
@ -252,7 +241,7 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
r->xheaders.p = x;
++r->xheaders.n;
}
r->t = c == '\r' ? CR1 : LF1;
r->t = c == '\r' ? kHttpStateCr : kHttpStateLf1;
break;
} else if ((c < 0x20 && c != '\t') || (0x7F <= c && c < 0xA0)) {
return ebadmsg();
@ -261,7 +250,7 @@ int ParseHttpMessage(struct HttpMessage *r, const char *p, size_t n) {
c = p[r->i] & 0xff;
}
break;
case LF2:
case kHttpStateLf2:
if (c == '\n') {
return ++r->i;
}