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haproxy/src/http.c

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REORG: http: move the HTTP semantics definitions to http.h/http.c It's a bit painful to have to deal with HTTP semantics for each protocol version (H1 and H2), and working on the version-agnostic code further emphasizes the problem. This patch creates http.h and http.c which are agnostic to the version in use, and which borrow a few parts from proto_http and from h1. For example the once thought h1-specific h1_char_classes array is in fact dictated by RFC7231 and is used to parse HTTP headers. A few changes were made to a few files which were including proto_http.h while they only needed http.h. Certain string definitions pre-dated the introduction of indirect strings (ist) so some were used to simplify the definition of the known HTTP methods. The current lookup code saves 2 kB of a heavily used table and is faster than the previous table based lookup (typ. 14 ns vs 16 before).
2018-09-10 13:38:55 +00:00
/*
* HTTP semantics
*
* Copyright 2000-2018 Willy Tarreau <w@1wt.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
*/
#include <ctype.h>
#include <common/config.h>
#include <common/http.h>
REORG: http: move error codes production and processing to http.c These error codes and messages are agnostic to the version, even if they are represented as HTTP/1.0 messages. Ultimately they will have to be transformed into internal HTTP messages to be used everywhere. The HTTP/1.1 100 Continue message was turned to an IST and the local copy in the Lua code was removed.
2018-09-10 16:04:24 +00:00
#include <common/standard.h>
REORG: http: move the HTTP semantics definitions to http.h/http.c It's a bit painful to have to deal with HTTP semantics for each protocol version (H1 and H2), and working on the version-agnostic code further emphasizes the problem. This patch creates http.h and http.c which are agnostic to the version in use, and which borrow a few parts from proto_http and from h1. For example the once thought h1-specific h1_char_classes array is in fact dictated by RFC7231 and is used to parse HTTP headers. A few changes were made to a few files which were including proto_http.h while they only needed http.h. Certain string definitions pre-dated the introduction of indirect strings (ist) so some were used to simplify the definition of the known HTTP methods. The current lookup code saves 2 kB of a heavily used table and is faster than the previous table based lookup (typ. 14 ns vs 16 before).
2018-09-10 13:38:55 +00:00
/* It is about twice as fast on recent architectures to lookup a byte in a
* table than to perform a boolean AND or OR between two tests. Refer to
* RFC2616/RFC5234/RFC7230 for those chars. A token is any ASCII char that is
* neither a separator nor a CTL char. An http ver_token is any ASCII which can
* be found in an HTTP version, which includes 'H', 'T', 'P', '/', '.' and any
* digit. Note: please do not overwrite values in assignment since gcc-2.95
* will not handle them correctly. It's worth noting that chars 128..255 are
* nothing, not even control chars.
*/
const unsigned char http_char_classes[256] = {
[ 0] = HTTP_FLG_CTL,
[ 1] = HTTP_FLG_CTL,
[ 2] = HTTP_FLG_CTL,
[ 3] = HTTP_FLG_CTL,
[ 4] = HTTP_FLG_CTL,
[ 5] = HTTP_FLG_CTL,
[ 6] = HTTP_FLG_CTL,
[ 7] = HTTP_FLG_CTL,
[ 8] = HTTP_FLG_CTL,
[ 9] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP | HTTP_FLG_CTL,
[ 10] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
[ 11] = HTTP_FLG_CTL,
[ 12] = HTTP_FLG_CTL,
[ 13] = HTTP_FLG_CRLF | HTTP_FLG_LWS | HTTP_FLG_CTL,
[ 14] = HTTP_FLG_CTL,
[ 15] = HTTP_FLG_CTL,
[ 16] = HTTP_FLG_CTL,
[ 17] = HTTP_FLG_CTL,
[ 18] = HTTP_FLG_CTL,
[ 19] = HTTP_FLG_CTL,
[ 20] = HTTP_FLG_CTL,
[ 21] = HTTP_FLG_CTL,
[ 22] = HTTP_FLG_CTL,
[ 23] = HTTP_FLG_CTL,
[ 24] = HTTP_FLG_CTL,
[ 25] = HTTP_FLG_CTL,
[ 26] = HTTP_FLG_CTL,
[ 27] = HTTP_FLG_CTL,
[ 28] = HTTP_FLG_CTL,
[ 29] = HTTP_FLG_CTL,
[ 30] = HTTP_FLG_CTL,
[ 31] = HTTP_FLG_CTL,
[' '] = HTTP_FLG_SPHT | HTTP_FLG_LWS | HTTP_FLG_SEP,
['!'] = HTTP_FLG_TOK,
['"'] = HTTP_FLG_SEP,
['#'] = HTTP_FLG_TOK,
['$'] = HTTP_FLG_TOK,
['%'] = HTTP_FLG_TOK,
['&'] = HTTP_FLG_TOK,
[ 39] = HTTP_FLG_TOK,
['('] = HTTP_FLG_SEP,
[')'] = HTTP_FLG_SEP,
['*'] = HTTP_FLG_TOK,
['+'] = HTTP_FLG_TOK,
[','] = HTTP_FLG_SEP,
['-'] = HTTP_FLG_TOK,
['.'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['/'] = HTTP_FLG_SEP | HTTP_FLG_VER,
['0'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['1'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['2'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['3'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['4'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['5'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['6'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['7'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['8'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
['9'] = HTTP_FLG_TOK | HTTP_FLG_VER | HTTP_FLG_DIG,
[':'] = HTTP_FLG_SEP,
[';'] = HTTP_FLG_SEP,
['<'] = HTTP_FLG_SEP,
['='] = HTTP_FLG_SEP,
['>'] = HTTP_FLG_SEP,
['?'] = HTTP_FLG_SEP,
['@'] = HTTP_FLG_SEP,
['A'] = HTTP_FLG_TOK,
['B'] = HTTP_FLG_TOK,
['C'] = HTTP_FLG_TOK,
['D'] = HTTP_FLG_TOK,
['E'] = HTTP_FLG_TOK,
['F'] = HTTP_FLG_TOK,
['G'] = HTTP_FLG_TOK,
['H'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['I'] = HTTP_FLG_TOK,
['J'] = HTTP_FLG_TOK,
['K'] = HTTP_FLG_TOK,
['L'] = HTTP_FLG_TOK,
['M'] = HTTP_FLG_TOK,
['N'] = HTTP_FLG_TOK,
['O'] = HTTP_FLG_TOK,
['P'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['Q'] = HTTP_FLG_TOK,
['R'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['S'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['T'] = HTTP_FLG_TOK | HTTP_FLG_VER,
['U'] = HTTP_FLG_TOK,
['V'] = HTTP_FLG_TOK,
['W'] = HTTP_FLG_TOK,
['X'] = HTTP_FLG_TOK,
['Y'] = HTTP_FLG_TOK,
['Z'] = HTTP_FLG_TOK,
['['] = HTTP_FLG_SEP,
[ 92] = HTTP_FLG_SEP,
[']'] = HTTP_FLG_SEP,
['^'] = HTTP_FLG_TOK,
['_'] = HTTP_FLG_TOK,
['`'] = HTTP_FLG_TOK,
['a'] = HTTP_FLG_TOK,
['b'] = HTTP_FLG_TOK,
['c'] = HTTP_FLG_TOK,
['d'] = HTTP_FLG_TOK,
['e'] = HTTP_FLG_TOK,
['f'] = HTTP_FLG_TOK,
['g'] = HTTP_FLG_TOK,
['h'] = HTTP_FLG_TOK,
['i'] = HTTP_FLG_TOK,
['j'] = HTTP_FLG_TOK,
['k'] = HTTP_FLG_TOK,
['l'] = HTTP_FLG_TOK,
['m'] = HTTP_FLG_TOK,
['n'] = HTTP_FLG_TOK,
['o'] = HTTP_FLG_TOK,
['p'] = HTTP_FLG_TOK,
['q'] = HTTP_FLG_TOK,
['r'] = HTTP_FLG_TOK,
['s'] = HTTP_FLG_TOK,
['t'] = HTTP_FLG_TOK,
['u'] = HTTP_FLG_TOK,
['v'] = HTTP_FLG_TOK,
['w'] = HTTP_FLG_TOK,
['x'] = HTTP_FLG_TOK,
['y'] = HTTP_FLG_TOK,
['z'] = HTTP_FLG_TOK,
['{'] = HTTP_FLG_SEP,
['|'] = HTTP_FLG_TOK,
['}'] = HTTP_FLG_SEP,
['~'] = HTTP_FLG_TOK,
[127] = HTTP_FLG_CTL,
};
REORG: http: move error codes production and processing to http.c These error codes and messages are agnostic to the version, even if they are represented as HTTP/1.0 messages. Ultimately they will have to be transformed into internal HTTP messages to be used everywhere. The HTTP/1.1 100 Continue message was turned to an IST and the local copy in the Lua code was removed.
2018-09-10 16:04:24 +00:00
/* We must put the messages here since GCC cannot initialize consts depending
* on strlen().
*/
struct buffer http_err_chunks[HTTP_ERR_SIZE];
const struct ist HTTP_100 = IST("HTTP/1.1 100 Continue\r\n\r\n");
/* Warning: no "connection" header is provided with the 3xx messages below */
const char *HTTP_301 =
"HTTP/1.1 301 Moved Permanently\r\n"
"Content-length: 0\r\n"
"Location: "; /* not terminated since it will be concatenated with the URL */
const char *HTTP_302 =
"HTTP/1.1 302 Found\r\n"
"Cache-Control: no-cache\r\n"
"Content-length: 0\r\n"
"Location: "; /* not terminated since it will be concatenated with the URL */
/* same as 302 except that the browser MUST retry with the GET method */
const char *HTTP_303 =
"HTTP/1.1 303 See Other\r\n"
"Cache-Control: no-cache\r\n"
"Content-length: 0\r\n"
"Location: "; /* not terminated since it will be concatenated with the URL */
/* same as 302 except that the browser MUST retry with the same method */
const char *HTTP_307 =
"HTTP/1.1 307 Temporary Redirect\r\n"
"Cache-Control: no-cache\r\n"
"Content-length: 0\r\n"
"Location: "; /* not terminated since it will be concatenated with the URL */
/* same as 301 except that the browser MUST retry with the same method */
const char *HTTP_308 =
"HTTP/1.1 308 Permanent Redirect\r\n"
"Content-length: 0\r\n"
"Location: "; /* not terminated since it will be concatenated with the URL */
/* Warning: this one is an sprintf() fmt string, with <realm> as its only argument */
const char *HTTP_401_fmt =
"HTTP/1.0 401 Unauthorized\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"WWW-Authenticate: Basic realm=\"%s\"\r\n"
"\r\n"
"<html><body><h1>401 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
const char *HTTP_407_fmt =
"HTTP/1.0 407 Unauthorized\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"Proxy-Authenticate: Basic realm=\"%s\"\r\n"
"\r\n"
"<html><body><h1>407 Unauthorized</h1>\nYou need a valid user and password to access this content.\n</body></html>\n";
const int http_err_codes[HTTP_ERR_SIZE] = {
[HTTP_ERR_200] = 200, /* used by "monitor-uri" */
[HTTP_ERR_400] = 400,
[HTTP_ERR_403] = 403,
[HTTP_ERR_405] = 405,
[HTTP_ERR_408] = 408,
[HTTP_ERR_421] = 421,
[HTTP_ERR_425] = 425,
[HTTP_ERR_429] = 429,
[HTTP_ERR_500] = 500,
[HTTP_ERR_502] = 502,
[HTTP_ERR_503] = 503,
[HTTP_ERR_504] = 504,
};
static const char *http_err_msgs[HTTP_ERR_SIZE] = {
[HTTP_ERR_200] =
"HTTP/1.0 200 OK\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>200 OK</h1>\nService ready.\n</body></html>\n",
[HTTP_ERR_400] =
"HTTP/1.0 400 Bad request\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>400 Bad request</h1>\nYour browser sent an invalid request.\n</body></html>\n",
[HTTP_ERR_403] =
"HTTP/1.0 403 Forbidden\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>403 Forbidden</h1>\nRequest forbidden by administrative rules.\n</body></html>\n",
[HTTP_ERR_405] =
"HTTP/1.0 405 Method Not Allowed\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>405 Method Not Allowed</h1>\nA request was made of a resource using a request method not supported by that resource\n</body></html>\n",
[HTTP_ERR_408] =
"HTTP/1.0 408 Request Time-out\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>408 Request Time-out</h1>\nYour browser didn't send a complete request in time.\n</body></html>\n",
[HTTP_ERR_421] =
"HTTP/1.0 421 Misdirected Request\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>421 Misdirected Request</h1>\nRequest sent to a non-authoritative server.\n</body></html>\n",
[HTTP_ERR_425] =
"HTTP/1.0 425 Too Early\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>425 Too Early</h1>\nYour browser sent early data.\n</body></html>\n",
[HTTP_ERR_429] =
"HTTP/1.0 429 Too Many Requests\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>429 Too Many Requests</h1>\nYou have sent too many requests in a given amount of time.\n</body></html>\n",
[HTTP_ERR_500] =
"HTTP/1.0 500 Internal Server Error\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>500 Internal Server Error</h1>\nAn internal server error occured.\n</body></html>\n",
[HTTP_ERR_502] =
"HTTP/1.0 502 Bad Gateway\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>502 Bad Gateway</h1>\nThe server returned an invalid or incomplete response.\n</body></html>\n",
[HTTP_ERR_503] =
"HTTP/1.0 503 Service Unavailable\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>503 Service Unavailable</h1>\nNo server is available to handle this request.\n</body></html>\n",
[HTTP_ERR_504] =
"HTTP/1.0 504 Gateway Time-out\r\n"
"Cache-Control: no-cache\r\n"
"Connection: close\r\n"
"Content-Type: text/html\r\n"
"\r\n"
"<html><body><h1>504 Gateway Time-out</h1>\nThe server didn't respond in time.\n</body></html>\n",
};
REORG: http: move the HTTP semantics definitions to http.h/http.c It's a bit painful to have to deal with HTTP semantics for each protocol version (H1 and H2), and working on the version-agnostic code further emphasizes the problem. This patch creates http.h and http.c which are agnostic to the version in use, and which borrow a few parts from proto_http and from h1. For example the once thought h1-specific h1_char_classes array is in fact dictated by RFC7231 and is used to parse HTTP headers. A few changes were made to a few files which were including proto_http.h while they only needed http.h. Certain string definitions pre-dated the introduction of indirect strings (ist) so some were used to simplify the definition of the known HTTP methods. The current lookup code saves 2 kB of a heavily used table and is faster than the previous table based lookup (typ. 14 ns vs 16 before).
2018-09-10 13:38:55 +00:00
const struct ist http_known_methods[HTTP_METH_OTHER] = {
[HTTP_METH_OPTIONS] = IST("OPTIONS"),
[HTTP_METH_GET] = IST("GET"),
[HTTP_METH_HEAD] = IST("HEAD"),
[HTTP_METH_POST] = IST("POST"),
[HTTP_METH_PUT] = IST("PUT"),
[HTTP_METH_DELETE] = IST("DELETE"),
[HTTP_METH_TRACE] = IST("TRACE"),
[HTTP_METH_CONNECT] = IST("CONNECT"),
};
/*
* returns a known method among HTTP_METH_* or HTTP_METH_OTHER for all unknown
* ones.
*/
enum http_meth_t find_http_meth(const char *str, const int len)
{
const struct ist m = ist2(str, len);
if (isteq(m, ist("GET"))) return HTTP_METH_GET;
else if (isteq(m, ist("HEAD"))) return HTTP_METH_HEAD;
else if (isteq(m, ist("POST"))) return HTTP_METH_POST;
else if (isteq(m, ist("CONNECT"))) return HTTP_METH_CONNECT;
else if (isteq(m, ist("PUT"))) return HTTP_METH_PUT;
else if (isteq(m, ist("OPTIONS"))) return HTTP_METH_OPTIONS;
else if (isteq(m, ist("DELETE"))) return HTTP_METH_DELETE;
else if (isteq(m, ist("TRACE"))) return HTTP_METH_TRACE;
else return HTTP_METH_OTHER;
}
REORG: http: move http_get_path() to http.c This function is purely HTTP once http_txn is put aside. So the original one was renamed to http_txn_get_path() and it extracts the relevant offsets from the txn to pass them to http_get_path(). One benefit of the new version is that it returns the length at the same time so that allowed to slightly simplify http_get_path_from_string() which had to look up the end pointer previously and which is not needed anymore.
2018-09-10 15:45:34 +00:00
REORG: http: move error codes production and processing to http.c These error codes and messages are agnostic to the version, even if they are represented as HTTP/1.0 messages. Ultimately they will have to be transformed into internal HTTP messages to be used everywhere. The HTTP/1.1 100 Continue message was turned to an IST and the local copy in the Lua code was removed.
2018-09-10 16:04:24 +00:00
/* This function returns HTTP_ERR_<num> (enum) matching http status code.
* Returned value should match codes from http_err_codes.
*/
const int http_get_status_idx(unsigned int status)
{
switch (status) {
case 200: return HTTP_ERR_200;
case 400: return HTTP_ERR_400;
case 403: return HTTP_ERR_403;
case 405: return HTTP_ERR_405;
case 408: return HTTP_ERR_408;
case 421: return HTTP_ERR_421;
case 425: return HTTP_ERR_425;
case 429: return HTTP_ERR_429;
case 500: return HTTP_ERR_500;
case 502: return HTTP_ERR_502;
case 503: return HTTP_ERR_503;
case 504: return HTTP_ERR_504;
default: return HTTP_ERR_500;
}
}
/* This function returns a reason associated with the HTTP status.
* This function never fails, a message is always returned.
*/
const char *http_get_reason(unsigned int status)
{
switch (status) {
case 100: return "Continue";
case 101: return "Switching Protocols";
case 102: return "Processing";
case 200: return "OK";
case 201: return "Created";
case 202: return "Accepted";
case 203: return "Non-Authoritative Information";
case 204: return "No Content";
case 205: return "Reset Content";
case 206: return "Partial Content";
case 207: return "Multi-Status";
case 210: return "Content Different";
case 226: return "IM Used";
case 300: return "Multiple Choices";
case 301: return "Moved Permanently";
case 302: return "Moved Temporarily";
case 303: return "See Other";
case 304: return "Not Modified";
case 305: return "Use Proxy";
case 307: return "Temporary Redirect";
case 308: return "Permanent Redirect";
case 310: return "Too many Redirects";
case 400: return "Bad Request";
case 401: return "Unauthorized";
case 402: return "Payment Required";
case 403: return "Forbidden";
case 404: return "Not Found";
case 405: return "Method Not Allowed";
case 406: return "Not Acceptable";
case 407: return "Proxy Authentication Required";
case 408: return "Request Time-out";
case 409: return "Conflict";
case 410: return "Gone";
case 411: return "Length Required";
case 412: return "Precondition Failed";
case 413: return "Request Entity Too Large";
case 414: return "Request-URI Too Long";
case 415: return "Unsupported Media Type";
case 416: return "Requested range unsatisfiable";
case 417: return "Expectation failed";
case 418: return "I'm a teapot";
case 421: return "Misdirected Request";
case 422: return "Unprocessable entity";
case 423: return "Locked";
case 424: return "Method failure";
case 425: return "Too Early";
case 426: return "Upgrade Required";
case 428: return "Precondition Required";
case 429: return "Too Many Requests";
case 431: return "Request Header Fields Too Large";
case 449: return "Retry With";
case 450: return "Blocked by Windows Parental Controls";
case 451: return "Unavailable For Legal Reasons";
case 456: return "Unrecoverable Error";
case 499: return "client has closed connection";
case 500: return "Internal Server Error";
case 501: return "Not Implemented";
case 502: return "Bad Gateway or Proxy Error";
case 503: return "Service Unavailable";
case 504: return "Gateway Time-out";
case 505: return "HTTP Version not supported";
case 506: return "Variant also negociate";
case 507: return "Insufficient storage";
case 508: return "Loop detected";
case 509: return "Bandwidth Limit Exceeded";
case 510: return "Not extended";
case 511: return "Network authentication required";
case 520: return "Web server is returning an unknown error";
default:
switch (status) {
case 100 ... 199: return "Informational";
case 200 ... 299: return "Success";
case 300 ... 399: return "Redirection";
case 400 ... 499: return "Client Error";
case 500 ... 599: return "Server Error";
default: return "Other";
}
}
}
REORG: http: move http_get_path() to http.c This function is purely HTTP once http_txn is put aside. So the original one was renamed to http_txn_get_path() and it extracts the relevant offsets from the txn to pass them to http_get_path(). One benefit of the new version is that it returns the length at the same time so that allowed to slightly simplify http_get_path_from_string() which had to look up the end pointer previously and which is not needed anymore.
2018-09-10 15:45:34 +00:00
/* Parse the URI from the given transaction (which is assumed to be in request
* phase) and look for the "/" beginning the PATH. If not found, ist2(0,0) is
* returned. Otherwise the pointer and length are returned.
*/
struct ist http_get_path(const struct ist uri)
{
const char *ptr, *end;
if (!uri.len)
goto not_found;
ptr = uri.ptr;
end = ptr + uri.len;
/* RFC7230, par. 2.7 :
* Request-URI = "*" | absuri | abspath | authority
*/
if (*ptr == '*')
goto not_found;
if (isalpha((unsigned char)*ptr)) {
/* this is a scheme as described by RFC3986, par. 3.1 */
ptr++;
while (ptr < end &&
(isalnum((unsigned char)*ptr) || *ptr == '+' || *ptr == '-' || *ptr == '.'))
ptr++;
/* skip '://' */
if (ptr == end || *ptr++ != ':')
goto not_found;
if (ptr == end || *ptr++ != '/')
goto not_found;
if (ptr == end || *ptr++ != '/')
goto not_found;
}
/* skip [user[:passwd]@]host[:[port]] */
while (ptr < end && *ptr != '/')
ptr++;
if (ptr == end)
goto not_found;
/* OK, we got the '/' ! */
return ist2(ptr, end - ptr);
not_found:
return ist2(NULL, 0);
}
REORG: http: move error codes production and processing to http.c These error codes and messages are agnostic to the version, even if they are represented as HTTP/1.0 messages. Ultimately they will have to be transformed into internal HTTP messages to be used everywhere. The HTTP/1.1 100 Continue message was turned to an IST and the local copy in the Lua code was removed.
2018-09-10 16:04:24 +00:00
/* post-initializes the HTTP parts. Returns non-zero on error, with <err>
* pointing to the error message.
*/
int init_http(char **err)
{
int msg;
for (msg = 0; msg < HTTP_ERR_SIZE; msg++) {
if (!http_err_msgs[msg]) {
memprintf(err, "Internal error: no message defined for HTTP return code %d", msg);
return 0;
}
http_err_chunks[msg].area = (char *)http_err_msgs[msg];
http_err_chunks[msg].data = strlen(http_err_msgs[msg]);
}
return 1;
}
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