mirror of https://github.com/nealey/eris.git
Haha, I was generating that variable
This commit is contained in:
Neale Pickett
parent
77c3ed33dd
commit
48bb066488
223
eris.c
223
eris.c
|
|
@ -50,28 +50,44 @@
|
|||
#define DUMP_p(v) DUMPf("%s = %p", #v, v)
|
||||
#define DUMP_buf(v, l) DUMPf("%s = %.*s", #v, (int)(l), v)
|
||||
|
||||
/* Wait this long (seconds) for a valid HTTP request */
|
||||
/*
|
||||
* Wait this long (seconds) for a valid HTTP request
|
||||
*/
|
||||
#define READTIMEOUT 2
|
||||
|
||||
/* Wait this long (seconds) for a non-file send to complete */
|
||||
/*
|
||||
* Wait this long (seconds) for a non-file send to complete
|
||||
*/
|
||||
#define WRITETIMEOUT 10
|
||||
|
||||
/* Quit if we can't write at least this many bytes per second */
|
||||
/*
|
||||
* Quit if we can't write at least this many bytes per second
|
||||
*/
|
||||
#define MIN_WRITE_RATE 2560
|
||||
|
||||
/* Wait this long for CGI to complete */
|
||||
/*
|
||||
* Wait this long for CGI to complete
|
||||
*/
|
||||
#define CGI_TIMEOUT (5*60)
|
||||
|
||||
/* How long each sendfile call can take */
|
||||
/*
|
||||
* How long each sendfile call can take
|
||||
*/
|
||||
#define SENDFILE_TIMEOUT ((int)(SIZE_MAX / MIN_WRITE_RATE))
|
||||
|
||||
/* Maximum size of a request header (the whole block) */
|
||||
/*
|
||||
* Maximum size of a request header (the whole block)
|
||||
*/
|
||||
#define MAXHEADERLEN 8192
|
||||
|
||||
/* Maximum size of a request line */
|
||||
/*
|
||||
* Maximum size of a request line
|
||||
*/
|
||||
#define MAXREQUESTLEN 2048
|
||||
|
||||
/* Maximum number of header fields */
|
||||
/*
|
||||
* Maximum number of header fields
|
||||
*/
|
||||
#define MAXHEADERFIELDS 60
|
||||
|
||||
#define BUFFER_SIZE 8192
|
||||
|
|
@ -88,7 +104,9 @@ int portappend = 0;
|
|||
char *connector = NULL;
|
||||
|
||||
|
||||
/* Variables that persist between requests */
|
||||
/*
|
||||
* Variables that persist between requests
|
||||
*/
|
||||
int cwd;
|
||||
int keepalive = 0;
|
||||
char *remote_addr = NULL;
|
||||
|
|
@ -122,8 +140,7 @@ dolog(int code, off_t len)
|
|||
sanitize(user_agent);
|
||||
sanitize(refer);
|
||||
|
||||
fprintf(stderr, "%s %d %lu %s %s %s %s\n",
|
||||
remote_addr, code, (unsigned long) len, host, user_agent, refer, path);
|
||||
fprintf(stderr, "%s %d %lu %s %s %s %s\n", remote_addr, code, (unsigned long) len, host, user_agent, refer, path);
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -154,8 +171,7 @@ badrequest(long code, const char *httpcomment, const char *message)
|
|||
if (message) {
|
||||
msglen = (strlen(message) * 2) + 15;
|
||||
|
||||
printf("Content-Length: %lu\r\nContent-Type: text/html\r\n\r\n",
|
||||
(unsigned long) msglen);
|
||||
printf("Content-Length: %lu\r\nContent-Type: text/html\r\n\r\n", (unsigned long) msglen);
|
||||
printf("<title>%s</title>%s", message, message);
|
||||
}
|
||||
printf("\r\n");
|
||||
|
|
@ -201,23 +217,20 @@ void
|
|||
get_ucspi_env()
|
||||
{
|
||||
char *ucspi = getenv("PROTO");
|
||||
char *ip = NULL;
|
||||
char *port = NULL;
|
||||
|
||||
if (ucspi) {
|
||||
char *p;
|
||||
|
||||
/* Busybox, as usual, has the right idea */
|
||||
/*
|
||||
* Busybox, as usual, has the right idea
|
||||
*/
|
||||
if ((p = proto_getenv(ucspi, "REMOTEADDR"))) {
|
||||
remote_addr = strdup(p);
|
||||
} else {
|
||||
char *ip = proto_getenv(ucspi, "REMOTEIP");
|
||||
char *port = proto_getenv(ucspi, "REMOTEPORT");
|
||||
|
||||
if (ip) {
|
||||
char buf[80];
|
||||
|
||||
snprintf(buf, sizeof buf, "%s:%s", ip, port);
|
||||
remote_addr = strdup(buf);
|
||||
}
|
||||
ip = proto_getenv(ucspi, "REMOTEIP");
|
||||
port = proto_getenv(ucspi, "REMOTEPORT");
|
||||
}
|
||||
|
||||
if ((p = proto_getenv(ucspi, "REMOTEINFO"))) {
|
||||
|
|
@ -225,9 +238,17 @@ get_ucspi_env()
|
|||
}
|
||||
}
|
||||
|
||||
if (! remote_addr) {
|
||||
if (!ip) {
|
||||
// stunnel
|
||||
remote_addr = getenv("REMOTE_ADDR");
|
||||
ip = getenv("REMOTE_HOST");
|
||||
port = getenv("REMOTE_PORT");
|
||||
}
|
||||
|
||||
if (ip) {
|
||||
char buf[80];
|
||||
|
||||
snprintf(buf, sizeof buf, "%s:%s", ip, port);
|
||||
remote_addr = strdup(buf);
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -264,8 +285,7 @@ parse_options(int argc, char *argv[])
|
|||
exit(0);
|
||||
case 'h':
|
||||
default:
|
||||
fprintf(stderr, "Usage: %s [OPTIONS]\n",
|
||||
argv[0]);
|
||||
fprintf(stderr, "Usage: %s [OPTIONS]\n", argv[0]);
|
||||
fprintf(stderr, "\n");
|
||||
fprintf(stderr, "-a Enable authentication\n");
|
||||
fprintf(stderr, "-c Enable CGI\n");
|
||||
|
|
@ -292,8 +312,9 @@ sigchld(int sig)
|
|||
static void
|
||||
sigalarm_cgi(int sig)
|
||||
{
|
||||
/* send this out regardless of whether we've already sent a header,
|
||||
* to maybe help with debugging */
|
||||
/*
|
||||
* send this out regardless of whether we've already sent a header, to maybe help with debugging
|
||||
*/
|
||||
badrequest(504, "Gateway Timeout", "The CGI is being too slow.");
|
||||
}
|
||||
|
||||
|
|
@ -315,7 +336,9 @@ cgi_child(const char *relpath)
|
|||
env("CONTENT_TYPE", content_type);
|
||||
}
|
||||
|
||||
/* Try to change to CGI's directory */
|
||||
/*
|
||||
* Try to change to CGI's directory
|
||||
*/
|
||||
{
|
||||
char *delim = strrchr(relpath, '/');
|
||||
|
||||
|
|
@ -356,7 +379,9 @@ cgi_parent(int cin, int cout, int passthru)
|
|||
nfds = cin;
|
||||
|
||||
if (content_length) {
|
||||
/* have post data */
|
||||
/*
|
||||
* have post data
|
||||
*/
|
||||
FD_SET(cout, &wfds);
|
||||
if (cout > nfds) {
|
||||
nfds = cout;
|
||||
|
|
@ -373,38 +398,54 @@ cgi_parent(int cin, int cout, int passthru)
|
|||
|
||||
if (FD_ISSET(cin, &rfds)) {
|
||||
if (passthru) {
|
||||
/* Pass everything through verbatim */
|
||||
/*
|
||||
* Pass everything through verbatim
|
||||
*/
|
||||
size_t len;
|
||||
|
||||
/* Re-use this big buffer */
|
||||
/*
|
||||
* Re-use this big buffer
|
||||
*/
|
||||
len = fread(cgiheader, 1, sizeof cgiheader, cinf);
|
||||
if (0 == len) {
|
||||
/* CGI is done */
|
||||
/*
|
||||
* CGI is done
|
||||
*/
|
||||
break;
|
||||
}
|
||||
fwrite(cgiheader, 1, len, stdout);
|
||||
|
||||
/* Naively assume the CGI knows best about sending stuff */
|
||||
/*
|
||||
* Naively assume the CGI knows best about sending stuff
|
||||
*/
|
||||
fflush(stdout);
|
||||
size += len;
|
||||
} else {
|
||||
/* Interpret header fields */
|
||||
/*
|
||||
* Interpret header fields
|
||||
*/
|
||||
size_t readlen = (sizeof cgiheader) - cgiheaderlen;
|
||||
|
||||
if (NULL == fgets(cgiheader + cgiheaderlen, readlen, cinf)) {
|
||||
/* EOF or error */
|
||||
/*
|
||||
* EOF or error
|
||||
*/
|
||||
badrequest(500, "CGI Error", "CGI output too weird");
|
||||
}
|
||||
cgiheaderlen = strlen(cgiheader);
|
||||
|
||||
if ('\n' == cgiheader[cgiheaderlen - 1]) {
|
||||
/* We read a whole line */
|
||||
/*
|
||||
* We read a whole line
|
||||
*/
|
||||
size_t len;
|
||||
char *val;
|
||||
|
||||
len = extract_header_field(cgiheader, &val, 0);
|
||||
if (!len) {
|
||||
/* We've read the entire header block */
|
||||
/*
|
||||
* We've read the entire header block
|
||||
*/
|
||||
passthru = 1;
|
||||
eoh();
|
||||
} else {
|
||||
|
|
@ -495,7 +536,9 @@ serve_cgi(char *relpath)
|
|||
close(cin[1]);
|
||||
close(cout[0]);
|
||||
|
||||
/* Eris is not this smart yet */
|
||||
/*
|
||||
* Eris is not this smart yet
|
||||
*/
|
||||
keepalive = 0;
|
||||
|
||||
cgi_parent(cin[0], cout[1], 0);
|
||||
|
|
@ -526,15 +569,21 @@ fake_sendfile(int out_fd, int in_fd, off_t *offset, size_t count)
|
|||
char buf[BUFFER_SIZE];
|
||||
ssize_t l, m;
|
||||
|
||||
/* is mmap quicker? does it matter? */
|
||||
/*
|
||||
* is mmap quicker? does it matter?
|
||||
*/
|
||||
if (-1 == lseek(in_fd, *offset, SEEK_SET)) {
|
||||
/* We're screwed. The most helpful thing we can do now is die. */
|
||||
/*
|
||||
* We're screwed. The most helpful thing we can do now is die.
|
||||
*/
|
||||
fprintf(stderr, "Unable to seek. Dying.\n");
|
||||
exit(0);
|
||||
}
|
||||
l = read(in_fd, buf, min(count, sizeof buf));
|
||||
if (-1 == l) {
|
||||
/* Also screwed. */
|
||||
/*
|
||||
* Also screwed.
|
||||
*/
|
||||
fprintf(stderr, "Unable to read an open file. Dying.\n");
|
||||
exit(0);
|
||||
}
|
||||
|
|
@ -543,7 +592,9 @@ fake_sendfile(int out_fd, int in_fd, off_t *offset, size_t count)
|
|||
while (l) {
|
||||
m = write(out_fd, buf, l);
|
||||
if (-1 == m) {
|
||||
/* ALSO screwed. */
|
||||
/*
|
||||
* ALSO screwed.
|
||||
*/
|
||||
fprintf(stderr, "Unable to write to client: %m (req %s). Dying.\n", path);
|
||||
exit(0);
|
||||
}
|
||||
|
|
@ -685,15 +736,21 @@ find_serve_file(char *relpath)
|
|||
int fd;
|
||||
struct stat st;
|
||||
|
||||
/* Open fspath. If that worked, */
|
||||
/*
|
||||
* Open fspath. If that worked,
|
||||
*/
|
||||
if ((fd = open(relpath, O_RDONLY)) > -1) {
|
||||
fstat(fd, &st);
|
||||
/* If it is a directory, */
|
||||
/*
|
||||
* If it is a directory,
|
||||
*/
|
||||
if (S_ISDIR(st.st_mode)) {
|
||||
char path2[PATH_MAX];
|
||||
int fd2;
|
||||
|
||||
/* Redirect if it doesn't end with / */
|
||||
/*
|
||||
* Redirect if it doesn't end with /
|
||||
*/
|
||||
if (!endswith(path, "/")) {
|
||||
header(301, "Redirect");
|
||||
printf("Location: %s/\r\n", path);
|
||||
|
|
@ -701,10 +758,14 @@ find_serve_file(char *relpath)
|
|||
return;
|
||||
}
|
||||
|
||||
/* Open relpath + "index.html". If that worked,*/
|
||||
/*
|
||||
* Open relpath + "index.html". If that worked,
|
||||
*/
|
||||
snprintf(path2, sizeof path2, "%sindex.html", relpath);
|
||||
if ((fd2 = open(path2, O_RDONLY)) > -1) {
|
||||
/* serve that file and return. */
|
||||
/*
|
||||
* serve that file and return.
|
||||
*/
|
||||
fstat(fd2, &st);
|
||||
serve_file(fd2, path2, &st);
|
||||
close(fd2);
|
||||
|
|
@ -757,7 +818,9 @@ handle_request()
|
|||
char buf[MAXHEADERLEN];
|
||||
char *p;
|
||||
|
||||
/* Initialize globals */
|
||||
/*
|
||||
* Initialize globals
|
||||
*/
|
||||
host = NULL;
|
||||
user_agent = NULL;
|
||||
refer = NULL;
|
||||
|
|
@ -770,10 +833,14 @@ handle_request()
|
|||
|
||||
alarm(READTIMEOUT);
|
||||
|
||||
/* Read request line first */
|
||||
/*
|
||||
* Read request line first
|
||||
*/
|
||||
request[0] = 0;
|
||||
if (NULL == fgets(request, sizeof request, stdin)) {
|
||||
/* They must have hung up! */
|
||||
/*
|
||||
* They must have hung up!
|
||||
*/
|
||||
exit(0);
|
||||
}
|
||||
if (!strncmp(request, "GET /", 5)) {
|
||||
|
|
@ -789,7 +856,9 @@ handle_request()
|
|||
method = CONNECT;
|
||||
p = request + 8;
|
||||
} else {
|
||||
/* This also handles the case where fgets does nothing */
|
||||
/*
|
||||
* This also handles the case where fgets does nothing
|
||||
*/
|
||||
badrequest(405, "Method Not Allowed", "Unsupported HTTP method.");
|
||||
}
|
||||
|
||||
|
|
@ -798,7 +867,9 @@ handle_request()
|
|||
env("REQUEST_METHOD", request);
|
||||
}
|
||||
|
||||
/* Interpret path into fspath. */
|
||||
/*
|
||||
* Interpret path into fspath.
|
||||
*/
|
||||
path = p;
|
||||
{
|
||||
char *fsp = fspath;
|
||||
|
|
@ -835,7 +906,9 @@ handle_request()
|
|||
}
|
||||
*fsp = 0;
|
||||
|
||||
/* Change "/." to "/:" to keep "hidden" files such and prevent directory traversal */
|
||||
/*
|
||||
* Change "/." to "/:" to keep "hidden" files such and prevent directory traversal
|
||||
*/
|
||||
while ((fsp = strstr(fspath, "/."))) {
|
||||
*(fsp + 1) = ':';
|
||||
}
|
||||
|
|
@ -866,7 +939,9 @@ handle_request()
|
|||
env("SERVER_PROTOCOL", p);
|
||||
}
|
||||
|
||||
/* Read header fields */
|
||||
/*
|
||||
* Read header fields
|
||||
*/
|
||||
{
|
||||
char *base = buf;
|
||||
char *lastchar = base + (sizeof buf) - 2;
|
||||
|
|
@ -880,7 +955,9 @@ handle_request()
|
|||
char *name, *val;
|
||||
size_t len;
|
||||
|
||||
/* 40 is totally arbitrary here. */
|
||||
/*
|
||||
* 40 is totally arbitrary here.
|
||||
*/
|
||||
if (plen < 40) {
|
||||
badrequest(431, "Request Header Too Large", "The HTTP header block was too large");
|
||||
}
|
||||
|
|
@ -900,7 +977,9 @@ handle_request()
|
|||
|
||||
len = extract_header_field(p, &val, 1);
|
||||
if (!len) {
|
||||
/* blank line */
|
||||
/*
|
||||
* blank line
|
||||
*/
|
||||
break;
|
||||
}
|
||||
if (!val) {
|
||||
|
|
@ -909,15 +988,21 @@ handle_request()
|
|||
|
||||
name = p;
|
||||
|
||||
/* Set up CGI environment variables */
|
||||
/*
|
||||
* Set up CGI environment variables
|
||||
*/
|
||||
if (docgi) {
|
||||
env(cgi_name, val);
|
||||
}
|
||||
|
||||
/* By default, re-use buffer space */
|
||||
/*
|
||||
* By default, re-use buffer space
|
||||
*/
|
||||
base = cgi_name;
|
||||
|
||||
/* Handle special header fields */
|
||||
/*
|
||||
* Handle special header fields
|
||||
*/
|
||||
if (!strcmp(name, "HOST")) {
|
||||
host = val;
|
||||
base = name + len + 1;
|
||||
|
|
@ -941,8 +1026,12 @@ handle_request()
|
|||
} else if (!strcmp(name, "IF_MODIFIED_SINCE")) {
|
||||
ims = timerfc(val);
|
||||
} else if (!strcmp(name, "RANGE")) {
|
||||
/* Range: bytes=17-23 */
|
||||
/* Range: bytes=23- */
|
||||
/*
|
||||
* Range: bytes=17-23
|
||||
*/
|
||||
/*
|
||||
* Range: bytes=23-
|
||||
*/
|
||||
if (!strncmp(val, "bytes=", 6)) {
|
||||
p = val + 6;
|
||||
range_start = (off_t) strtoull(p, &p, 10);
|
||||
|
|
@ -956,7 +1045,9 @@ handle_request()
|
|||
}
|
||||
}
|
||||
|
||||
/* Try to change into the appropriate directory */
|
||||
/*
|
||||
* Try to change into the appropriate directory
|
||||
*/
|
||||
if (!nochdir) {
|
||||
char fn[PATH_MAX];
|
||||
|
||||
|
|
@ -992,7 +1083,9 @@ handle_request()
|
|||
badrequest(500, "Unable to exec connector", strerror(errno));
|
||||
}
|
||||
|
||||
/* Serve the file */
|
||||
/*
|
||||
* Serve the file
|
||||
*/
|
||||
alarm(WRITETIMEOUT);
|
||||
find_serve_file(fspath);
|
||||
fflush(stdout);
|
||||
|
|
|
|||
Loading…
Reference in New Issue